This article presents comments on "Relapse Prevention for Alcohol and Drug Problems: That Was Zen, This Is Tao," by Katie Witkiewitz and G.A. Marlatt. Stanton notes that the recent reconceptualization of relapse prevention by Witkiewitz and Marlatt enhances the model by "synthesizing recent empirical findings into a unified theory", but it does not go far enough. The new model reviews research evidence to support a multidimensional, dynamic, and systemic understanding of relapse. It incorporates concepts from systems theory (e.g., self-organization, reciprocity, feedback loops) to explain the complex interaction of factors involved in lapse and relapse episodes. These changes in the model provide greater sensitivity to the experiences of individuals across categories of drug type and high-risk situation, and they allow for significant variations in the core determinants of relapse. However, the role of interpersonal determinants receives scant attention in the article and in the new model. While it is a significant improvement over the static, linear model it replaces. Its value would be further enhanced by inclusion of concurrent social support as a phasic response that interacts with coping behavior and affective state, in addition to its role as a distal risk. Concurrent social support can play a significant role in the midst of high-risk situations. Including it in the phasic circle in the model is consistent with evidence-based clinical practice, and it may ensure that social support is not overlooked in future research into the relapse process.